Drainage and sedimentary response of the Northern Andes and the Pebas system to Miocene strike‐slip tectonics: A source to sink study of the Magdalena Basin

Basin Research, Год журнала: 2023, Номер 35(5), С. 1674 - 1717

Опубликована: Апрель 17, 2023

Abstract Miocene strike‐slip tectonics was responsible for creating and closing short‐lived (ca. 6 Ma) passages the emergence of isolated topography in Northern Andes. These geological events likely influenced migration and/or isolation biological populations. To better understand paleogeography hinterland foreland regions Andes, we conducted a source‐to‐sink approach Magdalena Basin. This basin is located between Central Eastern Cordilleras Colombia contains an ample record, which includes Lower fine‐grained strata Middle to Pliocene coarsening‐up strata. Our study presents new data set that detrital U–Pb zircon ages (15 samples), sandstone petrography (45 samples) low‐temperature thermochronology from Southern Cordillera (19 dates); together with previously published were used construct paleogeographical model The evolution Basin during characterized by playa permanent lake systems at ca. 17.5 Ma, may be related marine incursion into NW South America western Amazonia. appearance Eocene volcanic sources Honda Group after 16 Ma suggests development fluvial passages, connected Pacific Amazonia Caribbean regions. synchronous time exhumation topographic growth 10 transition lacustrine deposition Late deformation promoted oblique plate convergence collision Panamá‐Chocó Block explains along‐strike fragmentation Cordillera.

Язык: Английский

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The role of introgressive hybridization in shaping the geographically isolated gene pools of wax palm populations (genus Ceroxylon)

Molecular Phylogenetics and Evolution, Год журнала: 2024, Номер 193, С. 108013 - 108013

Опубликована: Янв. 7, 2024

Язык: Английский

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Neotropics as a Cradle for Adaptive Radiations

Cold Spring Harbor Perspectives in Biology, Год журнала: 2024, Номер 17(3), С. a041452 - a041452

Опубликована: Май 1, 2024

Neotropical ecosystems are renowned for numerous examples of adaptive radiation in both plants and animals resulting high levels biodiversity endemism. However, we still lack a comprehensive review the abiotic biotic factors that contribute to these radiations. To fill this gap, delve into geological history region, including role tectonic events such as Andean uplift, formation Isthmus Panama, emergence Guiana Brazilian Shields. We also explore ecological opportunities created by new habitats, well key innovations, novel feeding strategies or reproductive mechanisms. discuss different radiation, classic ones like Darwin's finches Anolis lizards, more recent bromeliads lupines. Finally, propose radiations mediated interactions their context. By doing so, provide insights complex interplay contributed remarkable diversity life Neotropics highlight importance region understanding origins biodiversity.

Язык: Английский

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Fracture evaluation of the plutonic basement in the Upper Magdalena Basin: Implications for the development of naturally fractured reservoirs in the Northern Andes

Geological Journal, Год журнала: 2024, Номер 59(7), С. 1968 - 1997

Опубликована: Май 27, 2024

Plutonic rocks typically have negligible matrix porosity and permeability. However, fractures mineral alterations create storage space flow pathways that turn plutonic into fluid reservoirs. Despite significant hydrocarbon discoveries, naturally fractured reservoirs in been poorly studied. In most Colombian basins, the crystalline basement has undergone multiple deformational events is thrust over Cretaceous to Cenozoic source reservoir of conventional petroleum system. This structural configuration ideal for migration oil a basement. A multiscale fracture analysis, including field, petrographical petrophysical techniques was conducted on Permian Jurassic Upper Magdalena Basin order understand controls brittle deformation, development networks their potential form The results indicate protolith textures structures, magmatic mylonitic foliation, favours fracturing. Dykes exhibit higher density (7–48 fractures/m), (mean = 0.4%) permeability 125,818.75 mD) than host rock (2–25 fractures/m; 0.23%; 12,066.09 mD). Intersection zones from regional faults, are characterized by highest lineament intensity. Our suggest dyke swarms interacting damage can significantly enhance quality providing rock.

Язык: Английский

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The Role of Transpressional Tectonics, Volcanism, and Fluvial Processes on the Oligocene to Pliocene Evolution of Intermontane Basins of the Western Colombian Andes

Tectonics, Год журнала: 2025, Номер 44(3)

Опубликована: Март 1, 2025

Abstract We use new and published detrital zircon U‐Pb data ( n > 10,000) from Oligocene‐Pliocene strata of intermontane basins the western Colombian Andes surrounding regions to study evolution sedimentary systems during transition arc collision/accretion subduction. Our database indicates a shift compartmentalized basin architecture, locally fed by transverse drainages, toward one with enhanced connectivity longitudinal sediment dispersal Middle‐Late Miocene. These events were accompanied end local marine influence on depocenters progressive uplift flanking Cordilleras as they became continuous topographic features. Post‐Pliocene transient disruption rivers was caused damming valley‐filling, attributed volcaniclastic flows. interpret inherent segmentation strike‐slip faults their morphological expressions primary controls depocenter Early‐Middle Miocene collision/accretion. The subsequent subduction tectonic continental margin triggered asymmetrical inversion in Andes. modern rugged morphology northern region is arguably associated widespread due upper plate cooling strengthening shallow Coiba microplate. Conversely, wide flat aggradational southern area interpreted result incomplete dominance tectonics. “normal” Malpelo microplate beneath Colombia might be linked higher heat flow localized deformation intra‐ back‐arc regions.

Язык: Английский

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Climbing Higher: Exploring Northern Andean Origin and Non‐Floral Trait Evolution in a Rapid, Recent Angiosperm Radiation

Journal of Biogeography, Год журнала: 2025, Номер unknown

Опубликована: Май 19, 2025

ABSTRACT Aim The centropogonid clade comprising Burmeistera H.Karst. & Triana, Centropogon C.Presl and Siphocampylus Pohl stands out as one of the most rapid plant radiations in Neotropics. We investigated origin diversification to enhance our understanding fruit evolution other non‐floral traits genus. By exploring interplay morphological, ecological geographical factors, we sought provide new insights into how these elements have influenced evolutionary trajectory . Location Time Period Late Pliocene present. Taxon Triana (Lobelioideae: Campanulaceae). Methods Using Hyb‐Seq data from 329 nuclear loci, reconstructed a phylogenetic tree using maximum likelihood RAxML calibrated final with prior age estimates for Lobelioideae. Additionally, estimated species ASTRAL performed various comparative analyses explore historical biogeography across Results originated Western Cordillera Colombian Andes, dispersing rest Northern Andes Central America between Mid‐Pleistocene. Inflated fruits evolved multiple times genus, their distribution varying by region but reaching highest proportion eastern slopes Andes. Higher elevations larger sizes both increased diversification, especially late‐branching characterised inflated berries climbing habit, which underscores role driving diversification. Main Conclusions Studies diverse overlooked taxa, such , can greatly aid ecology Neotropical cloud forest ecosystems.

Язык: Английский

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Hyper-Cryptic radiation of a tropical montane plant lineage

Molecular Phylogenetics and Evolution, Год журнала: 2023, Номер 190, С. 107954 - 107954

Опубликована: Окт. 28, 2023

Species are seen as the fundamental unit of biotic diversity, and thus their delimitation is crucial for defining measures diversity assessments studying evolution. Differences between species have traditionally been associated with variation in morphology. And yet, discovery cryptic suggests that evolution distinct lineages does not necessarily involve morphological differences. Here, we analyze 1,684,987 variant sites over 4,000 genes more than 400 samples to show how a tropical montane plant lineage (Geonoma undata complex) composed numerous unrecognized genetic groups morphologically distinct. We find 11 14 clades do correspond three currently recognized species. Most genetically different geographic distance topography most important factors determining this divergence. The structure match its variation. Instead, complex constitutes first example hyper-cryptic radiation mountains.

Язык: Английский

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Volcanoes, evolving landscapes, and biodiversity in Neotropical mountains

Frontiers of Biogeography, Год журнала: 2024, Номер 16(1)

Опубликована: Фев. 6, 2024

The longstanding view of Neotropical mountain uplift as a promoter species diversification has become commonplace in the last decades and could benefit from more specific Earth-Life evolution associations. We now know that formation contributed to outstanding levels richness endemism mountains. Nonetheless, we are lacking conceptual empirical frameworks where geological biological processes causally linked through testable hypotheses. In this perspective, present volcanic activity Neotropics, not phenomena occurring “on top of” uplift, latter being biogeographical interest, but rather directly impact biodiversity themselves phenomenon interest. Volcanoes deserve attention because their effects on landscape generate predictable process counterparts can be integrated into models enabling hypothesis testing. review examples literature emphasizing spatio-temporal scale volcanism’s predicted recorded biodiversity. illustrate our perspective by two recent study cases, focusing wax palms passerine birds. first one, palm genomic sampling was used test 2 hypotheses: northern Andes have been disconnected past connected rapid repeated eruptions caldera-forming Colombian Massif fostering episodic dispersal, or alternatively, they always continuous gradually uplifted hosting dispersal time. broadly same area, genetic phenotypic data revealed existence hybrid zone between warbler genus Myioborus. Because hybridization is likely younger than activity, topographic connection spurred volcanism also enabled secondary contact previously isolated species, merits formal Altogether, emphasize pertinence record offering opportunities for evaluation hypotheses context mountains singularly outsized

Язык: Английский

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Patterns in the genetic structure of 49 lowland rain forest tree species co‐distributed on opposite sides of the northern Andes

Biotropica, Год журнала: 2024, Номер 56(2)

Опубликована: Фев. 22, 2024

Abstract The Andes are a major dispersal barrier for lowland rain forest plants and animals, yet hundreds of tree species distributed on both sides the northern Andes, raising questions about how influenced their biogeographic histories population genetic structure. To explore these questions, we generated standardized datasets thousands SNPs from paired populations 49 co‐distributed in communities located Panama Amazonian Ecuador calculated diversity ( π ) absolute divergence d XY within between populations, respectively. We predicted (1) higher ancestral source region (east or west Andes) each taxon (2) correlation statistics with attributes, including elevational range life‐history strategy. found that was putative regions, possibly reflecting founder events during colonization. little support relationship attributes except limits exhibited , implying older times. One possible explanation this pattern is through mountain passes declined importance relative to via alternative routes as experienced uplift. no difference mean Central America Amazon. Overall, our results suggest across has left enduring signatures structure widespread trees. outline additional hypotheses be tested species‐specific case studies.

Язык: Английский

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Botany and geogenomics: Constraining geological hypotheses in the neotropics with large‐scale genetic data derived from plants

American Journal of Botany, Год журнала: 2024, Номер 111(4)

Опубликована: Апрель 1, 2024

Abstract Decades of empirical research have revealed how the geological history our planet shaped plant evolution by establishing well‐known patterns (e.g., mountain uplift resulted in high rates diversification and replicate radiations montane taxa). This follows a traditional approach where botanical data are interpreted light events. In this synthesis, I instead describe integrating natural history, phylogenetics, population genetics, can be applied alongside geology paleontology to inform understanding past climatic processes. conceptual shift aligns with goals emerging field geogenomics. neotropics, geogenomics is powerful tool for reciprocal exploration two long standing questions biology geology: dynamic landscape region came it richest flora. Current challenges that specific analytical approaches discussed. scale at which various addressed from biological what makes some groups plants excellent model systems research. Although discussed reference recommendations given here should expanded exploring long‐standing on earth evolved use DNA.

Язык: Английский

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